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[v1,2/6] dmaengine: idma64: convert to __ffs()

Message ID 1442220941-15487-3-git-send-email-andriy.shevchenko@linux.intel.com (mailing list archive)
State Accepted
Headers show

Commit Message

Andy Shevchenko Sept. 14, 2015, 8:55 a.m. UTC 
We replace __fls() by __ffs() since we have to find a *minimum* data width that
satisfies both source and destination.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/dma/idma64.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
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Patch

diff --git a/drivers/dma/idma64.c b/drivers/dma/idma64.c
index 48d6d9e..8aea9f0 100644
--- a/drivers/dma/idma64.c
+++ b/drivers/dma/idma64.c
@@ -257,15 +257,15 @@  static u64 idma64_hw_desc_fill(struct idma64_hw_desc *hw,
 		dar = config->dst_addr;
 		ctllo |= IDMA64C_CTLL_DST_FIX | IDMA64C_CTLL_SRC_INC |
 			 IDMA64C_CTLL_FC_M2P;
-		src_width = min_t(u32, 2, __fls(sar | hw->len));
-		dst_width = __fls(config->dst_addr_width);
+		src_width = min_t(u32, 2, __ffs(sar | hw->len));
+		dst_width = __ffs(config->dst_addr_width);
 	} else {	/* DMA_DEV_TO_MEM */
 		sar = config->src_addr;
 		dar = hw->phys;
 		ctllo |= IDMA64C_CTLL_DST_INC | IDMA64C_CTLL_SRC_FIX |
 			 IDMA64C_CTLL_FC_P2M;
-		src_width = __fls(config->src_addr_width);
-		dst_width = min_t(u32, 2, __fls(dar | hw->len));
+		src_width = __ffs(config->src_addr_width);
+		dst_width = min_t(u32, 2, __ffs(dar | hw->len));
 	}
 
 	lli->sar = sar;